CN102634062B - Method for preparing high-tenacity reclaimed rubber by adding coupling agent - Google Patents

Method for preparing high-tenacity reclaimed rubber by adding coupling agent Download PDF

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Publication number
CN102634062B
CN102634062B CN2012101304378A CN201210130437A CN102634062B CN 102634062 B CN102634062 B CN 102634062B CN 2012101304378 A CN2012101304378 A CN 2012101304378A CN 201210130437 A CN201210130437 A CN 201210130437A CN 102634062 B CN102634062 B CN 102634062B
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China
Prior art keywords
rubber
coupling agent
waste
reclaimed rubber
reclaimed
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CN2012101304378A
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Chinese (zh)
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CN102634062A (en
Inventor
王艳秋
周立雪
曹可
徐云慧
姚亮
刘太闯
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徐州工业职业技术学院
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Priority to CN2012101304378A priority Critical patent/CN102634062B/en
Publication of CN102634062A publication Critical patent/CN102634062A/en
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Publication of CN102634062B publication Critical patent/CN102634062B/en

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/62Plastics recycling; Rubber recycling

Abstract

The invention discloses a method for preparing high-tenacity reclaimed rubber by adding a coupling agent, belonging to the technical field of waste rubber regeneration. In the preparation process of high-tenacity reclaimed rubber, the method comprises the following steps of: heating and drying waste rubber powder according to the charging sequence; heating and uniformly stirring the quantitative mixed rubber powder, pine tar, WR-510 and a coupling agent; regenerating the processed material in an internal mixer at certain temperature under certain pressure within certain time; adding the regenerated sizing material into an open mill for refining; sequentially adding ingredients in a performance detection formula into the reclaimed rubber for mixing according to the GB/T1 3460-2008 reclaimed rubber of the national standard Reclaimed Rubber; placing the rubber compound for vulcanization, and placing for 24 hours again; and testing the physical and mechanical properties and the processing property of the sizing material. The method disclosed by the invention has the beneficial effects that the reclaimed rubber obtained by the method has bright and clean surface and uniform color and texture; the tensile strength is kept over 19.5MPa; and the elongation at break is kept over 500%. The method disclosed by the invention reduces the processing energy consumption, lowers the product cost, is environmentally-friendly and has remarkable economic and social benefits.

Description

Add coupling agent to prepare the method for high-strength reclaimed rubber
Technical field
The present invention relates to the regenerating technology for waste rubber field, specifically a kind of method that adds coupling agent to prepare high-strength reclaimed rubber.Utilization adds coupling agent in the materials such as rubber powder of reclaimed rubber regeneration, utilize the interaction of coupling agent and material, prepares high-strength reclaimed rubber.
Background technology
The quantity of waste old material is only second to plastic waste in spent high molecular material, wherein learies is more than 1,000,000,000 doughnut whole world year, and China is at 5000~6,000 ten thousand.The recycling of waste old is take junked tire as main, and other also comprises waste rubber shoe and the inner tube of a tyre etc., and the utilization of waste rubber is conducive to protection of the environment, realizes the recycling of resource, is conducive to socioeconomic Sustainable development.
At present, conventional regeneration glue intensity is in about 8MPa, only can use or directly be used for preparing reclaimed rubber in low-grade rubber product.The applicant had once applied for " method of environment-friendly type high intensity power reclaimed rubber ", the tensile strength of the reclaimed rubber of production more than 18 MPa, elongation rate of tensile failure is more than 420%.
Coupling agent is the material that a class has two different properties functional groups, study discovery through us, coupling agent is except helping mineral filler disperses in the materials such as waste rubber powder and regenerator, also participated in the regeneration chemical reaction of waste rubber powder, sem analysis shows, coupling agent has strengthened regenerator, the filler interface with between shoddy is combined, and the interface performance is very fuzzy.But find to use the precedent of coupling agent in the regenerative process of in the past waste old.
Summary of the invention
For further improving the mechanical property of reclaimed rubber, replace synthetical glue or partly replace natural gum with high-strength reclaimed rubber.The invention provides a kind of method that adds coupling agent to prepare high-strength reclaimed rubber, add coupling agent in the production of high-strength reclaimed rubber, with the performance of further raising reclaimed rubber, make the reclaimed rubber performance of acquisition that further lifting arranged.
The present invention realizes with following technical scheme: a kind of method that adds coupling agent to prepare high-strength reclaimed rubber, it is characterized in that: the 20 order waste rubber powders that partly prepare take waste and old heavy load radial tire crown, waste and old crown compound of bias truck tire add tenderizer, coupling agent and regenerator preparation as raw material; Stockholm tar, rosin, tall oil or the wood tar oil of described tenderizer for extracting from plant, consumption is 12% of waste rubber powder quality; Described coupling agent is γ-(methacryloxy) propyl trimethoxy silicane (KH570), and consumption is 2% of waste rubber powder quality; Described regenerator adopts WR-510, and consumption is 0.5% of ground rubber quality; Concrete steps are as follows:
(1) at first the waste and old heavy load radial tire crown of strict screening, waste and old crown compound of bias truck tire partly prepare 20 order rubber powders;
(2) process according to following order of addition(of ingredients), first quantitatively take thick liquid tenderizer and regenerator WR-510, before using in whipping appts heated and stirred, then will both mix; And then evenly sneak into coupling agent and carry out further stirring the formation mixture;
(3) 20 order rubber powders and said mixture material are regenerated in Banbury mixer, 170 ℃ of regeneration temperatures, 3.5 hours recovery times, it is 0.4MPa that pressure is fastened on upper top;
(4) the good sizing material of regenerating adds mill to carry out refining, in mill by the roll spacing at 0.5mm under the low temperature thin-pass reclaimed rubber preparing any surface finish, have tackiness and intensity for 10 times;
(5) according to GB " regenerated rubber " GB/T 13460-2008 regenerated rubber formula successively the various Synergist S-421 95s in the Performance Detection formula are added carry out in reclaimed rubber mixing, then rubber unvulcanizate is parked sulfuration, after parking 24h again, sizing material is carried out physical and mechanical properties and process industrial art performance is tested.
The reclaimed rubber quality surface that obtains according to the present invention is bright and clean, color is homogeneous.Carry out formulating of recipe, vulcanize, park, detect according to GB, the tensile strength of prepared reclaimed rubber is more than 19.5MPa, and elongation rate of tensile failure is more than 500%.
The invention has the beneficial effects as follows: the reclaimed rubber performance of producing with method of the present invention improves, and such reclaimed rubber can be directly used in the production of middle-grade rubber item, also can be used for mixing of high-grade rubber item, and it is large that the field of use becomes.Reduce the temperature of regeneration, shortened the time of regeneration, thereby reduced the energy expenditure of processing.This product is environmentally friendly, has outstanding economic benefit and social benefit.
Embodiment
Further illustrate the solution of the present invention and effect below in conjunction with an embodiment.
Embodiment 1: equipment adopts Banbury mixer
Starting material title consumption (g)
9.00-20 load-carrying tire crown prepares 20 order waste rubber powders 873.2
Tenderizer Stockholm tar 104.8
Regenerator WR-510 4.5
Coupling agent KH570 17.5
At first screen waste and old heavy load radial tire crown, waste and old crown compound of bias truck tire is partly made 20 order rubber powders; Selecting regenerator is WR-510, and selecting tenderizer is rosin or Stockholm tar, and coupling agent is selected γ-(methacryloxy) propyl trimethoxy silicane (KH570).WR-510 belongs to viscous liquid, before using, necessary heated and stirred is even, and required WR-510 4.4 g are poured in agitator, stirs under the 10min electrically heated before using, then Stockholm tar 104.8 g are added the agitator heated and stirred, then will both heat and mix the formation compound; And then sneak into coupling agent KH570 17.5 g and further stir.Said mixture material and rubber powder 873.2 g are added Banbury mixer (XSM-1/20~80) successively, open electrically heated, guarantee that the Banbury mixer regeneration temperature reaches 170 ℃, it is 0.4MPa that pressure is fastened on upper top, regenerates under these conditions 3.5 hours.The sizing material that regeneration is good adds mill (XK-160) to carry out refining, in mill by the roll spacing at 0.5mm under low temperature thin-pass 15min prepare any surface finish, the reclaimed rubber of certain tackiness and intensity arranged.According to GB " regenerated rubber " GB/T 13460-2008 regenerated rubber formula successively the various Synergist S-421 95s in the Performance Detection formula are added carry out in reclaimed rubber mixing, then rubber unvulcanizate is parked sulfuration, after parking 24h again, sizing material is carried out physical and mechanical properties and process industrial art performance is tested.The test result of reclaimed rubber is: more than tensile strength was stabilized in 19.5MPa, tensile yield was stabilized in more than 500%.The tensile strength 18.0MPa of the conventional high-strength reclaimed rubber of Performance Ratio, tensile yield 420% all is significantly increased.

Claims (2)

1. method that adds coupling agent to prepare high-strength reclaimed rubber, it is characterized in that: the 20 order waste rubber powders that partly prepare take waste and old heavy load radial tire crown, waste and old crown compound of bias truck tire add tenderizer, coupling agent and regenerator preparation as raw material; Rosin, tall oil or the wood tar oil of described tenderizer for extracting from plant, consumption is 12% of waste rubber powder quality; Described coupling agent is γ-(methacryloxy) propyl trimethoxy silicane, and consumption is 2% of waste rubber powder quality; Described regenerator adopts WR-510, and consumption is 0.5% of ground rubber quality; Concrete steps are as follows:
(1) at first the waste and old heavy load radial tire crown of strict screening, waste and old crown compound of bias truck tire partly prepare 20 order rubber powders;
(2) process according to following order of addition(of ingredients), first quantitatively take thick liquid tenderizer and regenerator WR-510, before using in whipping appts heated and stirred, then will both mix; And then evenly sneak into coupling agent and carry out further stirring the formation mixture;
(3) 20 order rubber powders and said mixture material are regenerated in Banbury mixer, 170 ℃ of regeneration temperatures, 3.5 hours recovery times, it is 0.4MPa that pressure is fastened on upper top;
(4) the good sizing material of regenerating adds mill to carry out refining, in mill by the roll spacing at 0.5mm under the low temperature thin-pass reclaimed rubber preparing any surface finish, have tackiness and intensity for 10 times;
(5) according to GB " regenerated rubber " GB/T 13460-2008 regenerated rubber formula successively the various Synergist S-421 95s in the Performance Detection formula are added carry out in reclaimed rubber mixing, then rubber unvulcanizate is parked sulfuration, after parking 24h again, sizing material is carried out physical and mechanical properties and process industrial art performance is tested.
2. a kind of method that adds coupling agent to prepare high-strength reclaimed rubber according to claim 1, it is characterized in that: the tensile strength of prepared reclaimed rubber is more than 19.5MPa, and elongation rate of tensile failure is more than 500%.
CN2012101304378A 2012-04-28 2012-04-28 Method for preparing high-tenacity reclaimed rubber by adding coupling agent CN102634062B (en)

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CN102634062B true CN102634062B (en) 2013-06-26

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103849017B (en) * 2014-03-03 2015-08-26 四川省隆昌海燕橡胶有限公司 A kind of preparation method of whole-tyre reclaim
CN103834076B (en) * 2014-03-03 2015-10-14 四川省隆昌海燕橡胶有限公司 A kind of preparation technology of high-strength reclaimed rubber
CN105254919B (en) * 2015-11-10 2018-05-25 徐州工业职业技术学院 A kind of method that environment-friendly, high-intensity power tyre reclaim is prepared using microwave
CN105348558A (en) * 2015-12-09 2016-02-24 徐州工业职业技术学院 Method for preparing environment-friendly high-strength reclaimed rubber by increasing revolving speed
CN106750508A (en) * 2016-03-17 2017-05-31 青岛科技大学 A kind of damaged tire face renovation process
CN107868274A (en) * 2017-12-25 2018-04-03 福建省邵武市恒晖橡胶再生有限公司 A kind of preparation method of reclaimed rubber
CN109206661A (en) * 2018-08-15 2019-01-15 四川省隆昌海燕橡胶有限公司 A kind of tasteless high-intensitive reclaimed rubber

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006037278A1 (en) * 2004-10-09 2006-04-13 Min Duo Chen A reclaiming method of waste elastomer
CN102061006A (en) * 2009-11-16 2011-05-18 焦作市弘瑞橡胶有限责任公司 Production process for reclaimed rubber

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Application publication date: 20120815

Assignee: Zhenjiang Toly Rubber Co., Ltd.

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Denomination of invention: Method for preparing high-tenacity reclaimed rubber by adding coupling agent

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Assignee: Zhenjiang Toly Rubber Co., Ltd.

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